Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck

CVE-2026-111224Netgate pfSense CE through 2.9.0 OS Command Injection via openvpn.connect_async.sh

High 7.5

In plain English

A high-severity OS command injection in pfSense CE from Netgate. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 5.4% (higher than 93% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)5.4%top 7.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

pfSense CE through 2.9.0 contains an OS command injection vulnerability in the OpenVPN openvpn.connect_async.sh script that allows authenticated VPN users to execute commands as root via crafted usernames. Attackers authenticated through RADIUS or LDAP can use usernames containing single quotes and shell metacharacters to break out of the eval'd pfctl anchor name on connect or disconnect.

Affected products (as reported)

Vendor	Product	Versions
Netgate	pfSense CE	0 – through 2.9.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/abraxas/pfsense-ovpn-connect-eval exploit, technical-description
https://abraxaslabs.tech/research/pfsense-ce-leftovers technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/sbin/openvpn.connect_async.sh#L83-L114 technical-description
VulnCheck Advisory: Netgate pfSense CE through 2.9.0 OS Command Injection via openvpn.connect_async.sh third-party-advisory